All non-professional software is limited to 5 e-files per computer.  So if you need to e-file more than that (rather than paper file), you can't use a non-professional version.  On the other hand hand, you COULD install it on more than one computer, and I think that gets around the limitation.

Yes, the CD/download/desktop version of TurboTax does have "Forms" mode that you can enter things just like ProSeries.  Most forms are EXACTLY like ProSeries.  The ones that are not identical are very similar to the ones in ProSeries.  However, you are not able to transfer a ProSeries file into TurboTax, so you would need to enter everything from scratch.